Is political polarization worse than it's been in the past?
Yes, by multiple key metrics, political polarization in the United States is higher now than it has been for much of the past several decades (especially since the mid-20th century bipartisan era), and in some elite-level measures it exceeds most of the post-Reconstruction period—though it is not unprecedented in American history and falls short of the existential divisions of the Civil War era.
Citations (63)
- https://www.cnn.com/2026/07/05/politics/trump-july-4-america-250-civil-war-analysis
background, article, neutral. Claim: Civil War comparison context: current divisions are not unprecedented and fall short of Civil War era divisions.
- https://web.archive.org/web/20140706125141/http:/voteview.com/dwnomjoint.asp
evidence, data page, points to yes. Claim: DW-NOMINATE data show congressional polarization at high levels compared with earlier periods.
- https://www.npr.org/transcripts/1124142684
background, article, neutral. Claim: General context on American political divisions.
- https://www.deseret.com/2024/1/15/24002302/dangerously-divided-united-states/
background, article, neutral. Claim: General context that the United States is dangerously divided.
- https://direct.mit.edu/rest/article/106/2/557/109262/Cross-Country-Trends-in-Affective-Polarization
evidence, article, points to yes. Claim: Cross-country trends show affective polarization in the US rising more than in other countries.
- https://legacy.voteview.com/pdf/Carl_Albert_Extensions_essay_2005.pdf
evidence, official document, points to yes. Claim: Voteview essay on long-run congressional polarization trends.
- https://www.pewresearch.org/2024/09/13/how-us-public-opinion-has-changed-in-20-years-of-our-surveys/
statistic, article, points to yes. Claim: Pew survey data show widening partisan gaps over two decades.
- https://www.pewresearch.org/short-reads/2026/09/08/how-republicans-and-democrats-see-their-own-ideology-and-their-partys/
background, article, neutral. Claim: Partisans' views of their own ideology and party.
- https://www.scunning.com/files/gov51/paper1_descriptive.pdf
further reading, official document, neutral. Claim: Descriptive paper on polarization, listed without a specific claim.
- https://www.researchgate.net/publication/369944867_Network_Propaganda_Manipulation_Disinformation_and_Radicalization_in_American_Politics
further reading, other, neutral. Claim: Network Propaganda book on media and polarization.
- https://www.theatlantic.com/ideas/archive/2022/05/us-democrat-republican-partisan-polarization/629925/
evidence, article, points to yes. Claim: Partisan polarization in the US has intensified.
- https://en.wikipedia.org/wiki/NOMINATE_(scaling_method)
background, reference entry, neutral. Claim: NOMINATE scaling method explanation underlying elite polarization measures.
- https://ballotpedia.org/Wave_elections_(1918-2016)/Full_report
background, official document, neutral. Claim: Historical wave election data.
- https://www.cambridge.org/core/journals/studies-in-american-political-development/article/patronage-logrolls-and-polarization-congressional-parties-of-the-gilded-age-18761896/E39C08CDB2F3193434EEBE519C61D911
evidence, article, points to no. Claim: Gilded Age Congress was also highly polarized, so current polarization is not unprecedented.
- https://kylesaunders.com/voteview/
evidence, article, points to yes. Claim: Voteview data on congressional polarization.
- https://pmc.ncbi.nlm.nih.gov/articles/PMC8685731/
evidence, article, points to yes. Claim: Research on polarization trends.
- https://www.realclearpolitics.com/articles/2012/05/11/what_has_made_congress_more_polarized-3.html
evidence, article, points to yes. Claim: Discussion of causes of Congress becoming more polarized.
- https://fsi.stanford.edu/news/polarization-united-states-reconsidered
evidence, article, neutral. Claim: Stanford research reconsidering polarization in the US.
- https://www.cambridge.org/core/elements/american-affective-polarization-in-comparative-perspective/1E3584B482D51DB25FFFB37A8044F204/core-reader
evidence, official document, points to yes. Claim: US affective polarization in comparative perspective.
- https://www.tandfonline.com/doi/full/10.1080/2474736X.2024.2399095
evidence, article, points to yes. Claim: Academic study on polarization.
- https://www.nytimes.com/2026/08/10/style/america-is-atomizing.html
background, article, neutral. Claim: Commentary on American social fragmentation.
- https://www.pewresearch.org/short-reads/2022/03/10/the-polarization-in-todays-congress-has-roots-that-go-back-decades/ft_2022-02-22_congresspolarization_house_senate_new-png/
statistic, data page, points to yes. Claim: Pew chart of House and Senate polarization over decades.
- https://www.pewresearch.org/politics/2017/10/05/1-partisan-divides-over-political-values-widen/
statistic, article, points to yes. Claim: Partisan divides over political values widened.
- https://www.bloomberg.com/news/articles/2024-06-05/2024-us-politics-are-even-worse-than-2020-says-conference-board-survey
evidence, article, points to yes. Claim: Survey finds 2024 US politics worse than 2020.
- https://www.cfr.org/article/why-today-not-1850s
evidence, article, points to no. Claim: Today differs from the 1850s; not comparable to the Civil War era.
- https://thedebrief.org/u-s-political-polarization-didnt-rise-gradually-it-spiked-after-2008-study-finds/
statistic, article, points to yes. Claim: Study finds polarization spiked after 2008.
- https://voteviewblog.com/2015/07/11/an-update-on-house-and-senate-polarization/
statistic, article, points to yes. Claim: Update on House and Senate polarization.
- https://www.pewresearch.org/politics/2022/08/09/as-partisan-hostility-grows-signs-of-frustration-with-the-two-party-system/
statistic, article, points to yes. Claim: Partisan hostility growing.
- https://capitoltrace.com/polarization
statistic, data page, points to yes. Claim: Polarization data dashboard.
- https://blakecutler.com/dashboards/polarization
statistic, data page, points to yes. Claim: Polarization data dashboard.
- https://www.eurekalert.org/news-releases/1114750
evidence, article, points to yes. Claim: News release on polarization research.
- https://www.courthousenews.com/how-america-became-so-divided/
background, article, neutral. Claim: How America became so divided.
- https://theconversation.com/from-gettysburg-to-minneapolis-how-the-american-civil-war-continues-to-shape-how-we-understand-contemporary-political-conflicts-and-their-dangers-275015
background, article, neutral. Claim: Civil War legacy and contemporary political conflict.
- https://www.cambridge.org/core/journals/studies-in-american-political-development/article/substance-and-change-in-congressional-ideology-nominate-and-its-alternatives/681859D264663F5B92A3F6CD225D71ED
background, article, neutral. Claim: NOMINATE and alternative measures of congressional ideology.
- https://goodauthority.org/news/americans-views-of-the-opposite-party-have-declined-even-further/
statistic, article, points to yes. Claim: Americans' views of the opposite party have declined further.
- https://www.nature.com/articles/s41562-025-02251-0
evidence, article, points to yes. Claim: Nature Human Behaviour study on polarization.
- https://github.com/voteview/articles/blob/master/docs/party_polarization/party_polarization.Rmd
statistic, data page, points to yes. Claim: Voteview party polarization analysis code.
- https://www.iflscience.com/political-polarization-in-the-us-is-up-64-percent-and-has-a-clear-starting-point-2008-82456
statistic, article, points to yes. Claim: US polarization up 64 percent, starting around 2008.
- https://www.cam.ac.uk/stories/political-division-united-states
evidence, article, points to yes. Claim: Cambridge research on political division in US.
- https://greydynamics.com/u-s-civil-war-2-0-players-probability-prospects/
further reading, article, neutral. Claim: Civil war scenario analysis.
- https://papers.ssrn.com/sol3/papers.cfm?abstract_id=5451614
evidence, article, points to yes. Claim: Working paper on polarization.
- https://brownschool.washu.edu/2025/08/polarization-around-vaccine-hesitancy-was-12-times-greater-than-past-outbreaks-study-finds/
evidence, article, points to yes. Claim: Vaccine hesitancy polarization was 12 times greater than in past outbreaks.
- https://voteviewblog.com/2016/01/30/more-on-polarization-through-the-114th/
statistic, article, points to yes. Claim: Polarization through the 114th Congress.
- https://link.springer.com/article/10.1007/s11109-022-09784-4
evidence, article, points to yes. Claim: Political Behavior study on polarization.
- https://www.bloomberg.com/opinion/articles/2026-09-15/ai-is-quietly-reversing-political-polarization-but-it-comes-at-a-cost
background, article, points to no. Claim: AI is quietly reversing polarization.
- https://www.pewresearch.org/packages/political-polarization/
further reading, home page, neutral. Claim: Pew political polarization package.
- https://www.theatlantic.com/ideas/archive/2023/06/us-societal-trends-institutional-trust-economy/674260/
background, article, neutral. Claim: Societal trends including institutional trust.
- https://royalsocietypublishing.org/rsos/article/13/2/251428/479919/A-new-measure-of-issue-polarization-using-k-means
evidence, article, neutral. Claim: New measure of issue polarization.
- https://secularization.uni.hu/America_Together-125years-Putnam-2020.html
background, article, neutral. Claim: Putnam on America's 125-year trajectory of togetherness.
- https://www.nbcnews.com/politics/politics-news/local-officials-political-polarization-harmful-nationally-survey-rcna247174
evidence, article, points to yes. Claim: Local officials say polarization is harmful nationally.
- https://www.pewresearch.org/short-reads/2022/03/10/the-polarization-in-todays-congress-has-roots-that-go-back-decades/
statistic, article, points to yes. Claim: Polarization in Congress has roots going back decades.
- https://www.pewresearch.org/topic/politics-policy/political-parties-polarization/political-polarization/
further reading, home page, neutral. Claim: Pew polarization topic page.
- https://warpandweftdata.com/project/dw_nominate
background, other, neutral. Claim: DW-NOMINATE project description.
- https://voteviewblog.com/category/113th-congress/
further reading, home page, neutral. Claim: Voteview blog 113th Congress category.
- https://www.pewresearch.org/politics/feature/political-polarization-1994-2015/
statistic, article, points to yes. Claim: Pew polarization 1994-2015 feature.
- https://www.researchgate.net/publication/379811859_Another_Civil_War_in_America_Comparing_the_Social_Psychology_of_the_United_States_of_the_1850s_to_Today
evidence, article, points to no. Claim: Compares 1850s social psychology to today.
- https://www.hks.harvard.edu/faculty-research/policy-topics/science-technology-data/patterns-trust-scientists-have-shifted-over
evidence, article, points to yes. Claim: Patterns of trust in scientists shifted along partisan lines.
- https://osf.io/download/rvtsf_v1/?source=preprint&tz=America%2FNew_York
further reading, official document, neutral. Claim: Preprint on polarization.
- https://carnegieendowment.org/files/McCoy_et_al_-_Polarization_final_3.pdf
evidence, official document, points to yes. Claim: Carnegie report on polarization.
- https://www.news-gazette.com/news/town-hall-how-deep-is-the-divide/article_0a36e1dc-31bd-488d-a7d1-8ee1a2d0d0b4.html
background, article, neutral. Claim: Town hall on depth of the divide.
- https://www.pewresearch.org/politics/2024/04/09/changing-partisan-coalitions-in-a-politically-divided-nation/
statistic, article, points to yes. Claim: Changing partisan coalitions in a divided nation.
- https://carnegie.org/article/welcome-to-a-world-defined-by-polarization-instability-and-disruption/
background, article, neutral. Claim: World defined by polarization, instability and disruption.
- https://nationalinterest.org/feature/another-american-civil-war-take-heed-or-take-cover-204583
background, article, neutral. Claim: Risk of another American civil war.